Preheat the oven to 180 degrees C

Line a 2l loaf pan with baking paper

Melt the butter and peanut butter together

Beat the eggs and sugar until pale and thick

Add the melted peanut butter and butter and beat until combined

Mix in the bananas, bacon and vanilla extract

Sift the flour, baking powder and salt

Add the flour mixture to the egg mixture and mix until just combined

Pour the batter into the prepared loaf pan and smooth the top

Bake for 50- 60 minutes until a toothpick comes out clean when inserted into the middle

Let it cool a bit and turn out onto a wire rack. Remove the baking paper and let the loaf cool completely